After nearly three years of dating, has Gwen Stefani secretly married her boyfriend and fellow The Voice coach Blake Shelton?

The singer sparked speculations when she posted a photo with her "sister-in-law" while on a vacation with her family at an undisclosed location. On Instagram, she posted photos and videos from their sweet escape to the waters.

However, one particular post made her followers question whether she has secretly married her boyfriend this weekend.

Many assume that the woman in the photo is Endy, Shelton's sister, and the vacation took place at his ranch in Oklahoma where they all frequently hang out together. It then sparked rumors that the two musicians have finally wedded after months of speculations that they are ready to walk down the aisle.

However, People confirmed that the woman in the photo is, indeed, Stefani's sister-in-law. It does not, in any way, prove that she is now married to Shelton.

In fact, the woman is Jen, wife of her brother Todd. The 48-year-old also posted photos of her children from her previous marriage.

Gwen Stefani Not Ready To Get Married To Blake Shelton Yet

Stefani and Shelton met while filming the reality singing competition The Voice in 2014. A year later, she filed a divorce from her first husband Gavin Rosendale while he called it quits with Miranda Lambert after four years of marriage.

At the time, sources revealed that the two had leaned on each other while going through the process of their respective divorces. Eventually, they confirmed that they are officially dating in November 2015.

Even after Stefani left The Voice, her romance with Shelton continues to grow stronger. The country singer has already met and seems to be really close to Stefani's children Kingston, Zuma, and Apollo. However, both are not ready to take the next big leap as of this moment.

"There is no reason for them to rush into a marriage so they aren't," said an anonymous source to Entertainment Tonight. "Both of them are happy and content with where their relationship is right now."

Stefani also kicked off her anticipated residency at the Zappos Theater in Las Vegas in June. She is scheduled to perform at the venue up until March 2019. Fans can book tickets via the official website of Planet Hollywood Resort & Casino.